[Bug]: Cannot use SSH / Cannot even install

[Quin452]

Problem description

I wanted to use Termux because I simply wanted to test a homeserver from outside of the LAN (using my mobile's data).

I installed Termux, and tried pinging, and that didn't work. I tried SSH, and that didn't work either, but that's because it said it wasn't installed. It recommended pkg dropbear and openssh, but both of those failed due to the URL. I tried apt openssh, and it said the package couldn't be found.

So I'm not sure what's going on. I can't ping my home server, but I can SSH just fine.
I'm trying Termux in order to test my router's port forwarding (which is the main [unrelated] issue).

I've noticed others posting these things here.
My phone is rooted, with LineageOS installed (I'm not sure if that matters). Are there any permissions I need to grant Termux (I have just granted it Storage).

Steps to reproduce the behavior.

ping IP

or ssh username@IP

What is the expected behavior?

No response

System information

• Termux application version: I downloaded it from Google Play (Sep. 2020 version?)
• Android OS version: LineageOS 18
• Device model: Razer Phone

[Grimler91]

and tried pinging, and that didn't work. I tried SSH, and that didn't work either,

What does "that didn't work" mean? What did you run, and what output did you get exactly?

I tried apt openssh, and it said the package couldn't be found.

apt openssh, if that is what you ran, is not a proper apt command, see apt --help

I can't ping my home server, but I can SSH just fine.

What do you mean? Three sentences earlier you said that ssh "didn't work"

[Quin452]

Sorry, I assumed people would follow the paraphrasing.

I ran ssh username@IP. It came back with "The program ssh is not installed. Install it by executing pkg install dropbear or ... openssh".
"username" and "IP" are placeholders.

I tried both of those and it goes through the process, but breaks at (and I'm not writing out every single line in full):

• GPG error
• The repo grimler.se is not signed
• Metadata integrity can't be verified
• Repo is disabled
• Repo is under maintenance or is down

I tried with apt install openssh, because heck, I know Ubuntu well and thought I'd give it a shot (that doesn't work/cannot be found).

I've also tried this when installed Termux through FDroid. Same result.

[Grimler91]

The repository issues are due to termux from google play being deprecated, the subscribed repository in that app version are down or are signed with keys that are missing from the termux-keyring package in that version, see pinned issue #2067.

If ping/ssh doesn't work then there's probably a firewall in the way, or some issue with your internet connection

I've also tried this when installed Termux through FDroid. Same result.

termux from FDroid should work fine, but termux-keyring needs to be updated before you can use the grimler.se mirror (all other mirrors should work out of the box though, you can change mirror with termux-change-repo)

[Quin452]

Okay. I understand. How do I update the keyring? Is this related to "change repo"? I think I'll stick with F-Droid (assuming that I can't fix the Play version).

[Grimler91]

curl -LO https://packages.termux.org/apt/termux-main/pool/main/t/termux-keyring/termux-keyring_2.4_all.deb
apt install ./termux-keyring_2.4_all.deb
apt update && apt upgrade

should work

[ghost]

I downloaded it from Google Play (Sep. 2020 version?)

Play Store version is outdated and shouldn't be used anymore. Use apk from F-Droid.

Keyring fix may be needed only for grimler.se mirror.

Everything else is quite trivial: pkg install openssh (worked fine at 2021.12.30).